MAINTENANCE MANUAL - Diagramasde.com · maintenance manual for models htr 10058·15 htr 10058·1e5...

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MAINTENANCE MANUAL

FOR MODELS

HTR 10058·15

HTR 10058·1 E5

HTR 10058·1 J5

HUNTRON INSTRUMENTS, INC.• 15123 Hwy. 99 North. Lynnwood, WA 98037. (800)426-9265 • (206)743-3171 • Telex 152951

TABLE OF CONTENTS

SPECIFICATIONS................................ ................................ ................................ .................. 2

GENERAL DESCRIPTION ................................ ................................ ................................ ....... 3

THEORY OF OPERATION ................................ ................................ ................................ ......... 5The Test Signal................................ ................................ ................................ ................ 5Testing Reactive Components ................................ ................................ ...................... 8

CIRCUIT DESCRIPTIONSignal Section................................ ................................ ................................ .............. 10Oscillator ................................ ................................ ................................ ................... 12Power Supply ................................ ................................ ................................ ............ 12Cathode Ray Tube Circuit................................ ................................ ............................. 12

INTERNAL SET UP AND ADJUSTMENTS ................................ ................................ ................ 17

TROUBLE SHOOTINGGeneral Information ................................ ................................ ................................ .... 19Power Supply ................................ ................................ ................................ ............ 19Signal Section ................................ ................................ ................................ .............. 22CRT Section................................ ................................ ................................ .................... 24Oscillator Section................................ ................................ ................................ .... 24

LIST OF REPLACEMENT PARTS................................ ................................ ............................ 25

SETUP, ADJUSTMENT & SCHEMATIC FOR SERIAL# PREFIX 212 ................................ .. 33

© COPYRIGHT 1983 - HUNTRON® INST RUMENTS, INC.

HTR 1005B-1S, B-1ES, B-1JSThe information contained herein is the exclusive property of Huntron® Instruments, Inc. (except asotherwise indicated) and shall not be reproduced in whole or in part without written authorizationfrom the company.

All information contained in this manual is the latest product information available at the time ofprinting. Huntron® Instruments, Inc. reserves the right to make changes at any time withoutnotice.

1

POWER REQUIREMENTS:

HTR 1005B-1SHTR 1005B-1ESHTR 1005B-1JS

10 Watts Maximum

SIZE:

HUNTRON TRACKER®SPECIFICATIONS

117VAC220/240VAC100VAC

60Hz50/60Hz50/60Hz

V'Jidth _ 8 3,4 InchHeight '" 31/2 InchLength 111/2 Inch

WEIGHT 5 pounds 5 oz.

AMBIENT TEMPERATURE:

Operating a to 50 deg CStorage -50 to 60 deg C

SHOCK AND VIBRATION:

Will withstand shock and vibration encountered in commercial shipping and handling.

TEST SIGNAL DATA:

All ratings, except P-P voltages, are conditions existing across a single silicon diode in the testterminals of the TRACKER® .

Waveform sineFrequency - 80 Hz

OPEN-CIRCUIT SHORT-CIRCUIT POWER POWER SHORT-CIRCUITPop VOLTAGE CURRENT mW mW CURRENT

RANGE VOLT mA R.M.S. R.M.S. PEAK mA PEAK

HIGH 120 0.29 0.26 0.52 0.8MED. 40 0.27 0.23 0.45 0.7LOW 20 64 81 161 170

CRT SCREEN SIZE 7 cm diagonalACCELERATION POTENTIAL 1350V. regulated

TRACE COMPARISON MODE:ALTERNATE MODE alternates display between two inputs at 0.8 Hz for Good/Bad comparison.

PROTECTION CIRCUIT:The HUNTRON TRACKER® provides protection against damage caused by touching probes withline circuits.

WARNING ... THE SYSTEM TO BE CHECKED MUST HAVE POWER TURNED OFF, AND HAVEHIGH VOLTAGE CAPACITORS DISCHARGED.

2

GENERAL DESCRIPTION

The HUNTRON TRACKER® is a special type of CRT display and signal processing instrumentthat can be used to determine the quality of certain types of electronic components.

Components are tested with a two terminal system of test leads that are placed across thecomponent under test. The test leads are inserted into the TRACKER® front panel. TheTRACKER® is used to test components in a power-off condition, and can be used to testcomponents mounted on printed circuit boards or other in-circuit conditions even with componentsbridged by various types of resistive values.

Devices that are normally tested by the TRACKER® include the following: semiconductor diodes,bipolar transistors, and field effect transistors; bipolar and MOS integrated circuits, includingboth analog and digital; certain types of capacitors and inductors.

Included as standard equipment with each TRACKER® is a set of HUNTRON® MICROPROBES™. The MICRO PROBE™ leads plug into the front panel test jacks. MICRO PROBES™have special tips so that they can be used to contact very small component terminals and smallPCB etchings without the danger of shorting adjacent terminals and leads. Also included asstandard equipment is a common test lead which is used with the TRACKER® in the "Compara-trace" mode (see Figure 2).

FRONT PANEL CONTROLS AND INDICATORS (Refer to Figure 1)

DISPLAY CONTROLS:

BRIGHT Controls the intensity of CRT displayVERT Controls the vertical position of CRT displayHORIZ Controls the horizontal position of CRT display

RANGE SELECTOR SWITCH:

Three interlocking pushbutton switches select one of three ranges characterized below.

HIGH Selects 120 V P-P sine wave test signalMED Selects 40 V P-P sine wave test signalLOW Selects 20 V P-P sine wave test signal

CHANNEL SELECT SWITCH:

Three position switch that selects the channel displayed.Top position selects CHANNEL A.Center position selects ALTERNATE MODE.Bottom position selects CHANNEL B.(ALTERNATE MODE alternates display between two inputs at 0.8 Hz for Good/Bad comparison.)

ON/OFF SWITCH 2-position pushbotton that turns the TRACKER@ ON orOFF

CHANNEL A LED Indicates CHANNEL A input is being displayedCHANNEL BLED Indicates CHANNEL B input is being displayedON/OFF INDICATOR LED Indicates POWER is ON or OFFRED TERMINAL CHANNEL A INPUTYELLOW TERMINAL CHANNEL B INPUTBLACK TERMINAL INSTRUMENT COMMON

3

CO....ON--"::i\=!;:=;!!!~"""'l'"...r..J u."'--t"F-T"'T11 LCHANNEl B lED

CHANNEL B INPUT+

CRT INTENSITY VERTICAL POSITION

CRT DISPLAY HORIZONTAL POSITION

rrn~~~~~~~~~r~;~IF~i~H~ANNELSELECT SWITCH

lOW RANGE SELECTMEDIUM RANGE SELECT

HIGH RANGE SELECTPOWER ON/OFF SWITCH

LOCATIONS OF FRONT PANEL CONTROLS

FIG.I

The HUNTRON TRACKER® can alternate automatically between the displays of CHANNEL Aand CHANNEL B inputs. This allows the user to directly compare the display of the suspect circuitto that of a known good circuit for QA or troubleshooting. Figure 2 shows how a TRACKER®can be used to compare a known good board with a board under test.

EBIIII~Oiiiiif--'//=

DOIJD~H]aD

CHANNELSELECTIONSWITCH

CHANNEL ALE.D.

REDTEST

TERMINAL

BLACKTESTTERMINAL

YELLOWTESTTERMINAL

CHANNEL BL.E.D.

COMPARING A KNOWN GOOD BOARD WITHA BOARD UNDER TEST

FIG.2

4

THEORY OF OPERATION

The HUNTRON TRACKER® applies a test signal across two terminals of the device being tested.This test signal causes a current to flow through the device and a voltage drop across its terminals.

The current flow is processed in such a way as to cause a vertical deflection of the scope trace,while the voltage across the test component causes a horizontal deflection of the scope trace.

THE TEST SIGNAL

This signal is an 80 Hz sine wave that alternately applies positive and negative voltages acrossthe component being tested.

In an open circuit condition the positive half cycle generates the left side trace on the CRT, andthe right side trace comes from negative half cycle. The 80 Hz test signal is generated on theOscillator Board and presented at the front panel test terminals through a signal transformer.The transformer has the dual purpose of adjusting the test voltage level for the various rangesand selecting the impedance level of the various ranges.

The test signal, as presented at the front panel, electrically appears as though it is being originatedby a voltage generator with a series output impedance. The open circuit voltage and generatorimpedance are both different for all three ranges.

Figure 3 shows the electrical equivalent of the generator section and how the voltage acrossthe terminals affects the horizontal and vertical deflection plates of the CRT. Shown is the symbolicrepresentation of a voltage generator (GEN) with a series internal impedance (Z gen) and a currentsensing point (I). Across these network elements are two test points A and COM.

ZGEN

GEN

+20~tV +--SIGNAL -20VSOURCE

A

COM

RANGE= MEDIUMTEST= OPEN CIRCUIT

flG3

An open circuit (such as that shown in Figure 3) has zero current flowing through the test leadsand has maximum voltage across the test leads. In the HIGH and MEDIUM ranges this isrepresented by a straight horizontal trace from the maximum left to the maximum right of theCRT. In the LOW range, an open circuit condition is shown as a diagonal trace from the upperright to the lower left corner of the CRT. Figure 4a shows scope traces in HIGH, MEDIUM andLOW ranges.

When the test leads are shorted, maximum current flows in the leads and there is zero voltageacross the lead. This is indicated by a vertical trace from the top to the bottom of the CRT onall ranges (see Figure 4b).

5

+HIGH

+MED

TEST: OPEN CI RCUIT

FIG.4.

LOW

+ + +HIGH MED LOW

TEST: SHORT CIRCUIT

FIG.4b

A pure resistance across the test leads would create both current flow in and voltage drop acrossthe resistance which would appear on the CRT as a deflected straight trace. The HIGH andMEDIUM ranges would have the trace deflected clockwise around the center of the CRT fromthe horizontal position (open circuit), while the LOW range would have the trace deflected clockwise from the open circuit diagonal position. On all ranges the length of the trace is reducedbecause of the internal voltage drop across Z gen caused by the resistor load and the trace isrotated toward a more vertical position because of the increased current through the load. Theamount of trace reduction and rotation depends upon the test resistance value and the rangechosen for the test.

Since a pure resistance is a linear electrical element, the resulting trace will always be a straightline. Non-linear electrical elements that are not reactive do not give a straight line over the entiretrace length. Figure 5 shows the trace with a 33 kohm resistor across the test leads in the MEDIUMrange. The resistor causes the horizontal deflection voltage to be reduced because of the currentflow through the resistor. The vertical deflection voltage is proportional to the current flow andthe resulting pattern is a clockwise rotated trace that is shorter than the open circuit trace. Thepeak current through the resistor is 320 microamps. The actual short circuit peak current is 730microamps. The generator impedance in the HIGH range is 75 kohms, in the MEDIUM range is27 kohms, and in the LOW range is 56 ohms.

3201'0~PEAK V

ZClEN

GEN

.2~rv_SIGN 20-SOlRCE

RANGE:MEDIUMTEST' 33K RESISTOR

A

33K

COM

FIG.5

6

+~c::r

CLOCKWiSE ROTATION

A non-linear component such as a silicon diode would allow a large current to flow during thehalf cycle when it is forward biased and very little current to flow during the reverse biased halfcycle. The voltage drop across the forward biased junction would be small (i.e. 0.7 V.), and thiswould appear as a near short causing a vertical trace to appear during that portion of the cycle.The reverse biased condition would cause very little current to flow and would look like an opencircuit trace on the CRT.

Figure 6a shows a silicon diode junction being observed with the TRACKER® in the LOW range,while Figure 6b shows traces in HIGH and MEDIUM ranges.

170~Qf\PEA~

ZGEN

tIOV(\

- \£0V

A

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IOY(\PEA~

-.7V

COM

RANGE; LOWTEST; DIODE

+RANGE; HIGHTEST; DIODE

FIG.60

FIG 6b

RANGE-MEDTEST; DIODE

Figure 7 shows a 33 kohm resistor being shunted by a silicon diode. During the first ha.lf of thetest signal the junction is forward biased and appears as a near short circuit to the test signalresulting in the vertical trace shown in the second quadrant of Figure 7. Then the test signalreverses polarity during the second half cycle and the diode becomes reverse biased. The reversebiased resistance of the diode is much greater than the 33 kohm resistance, so essentially allof the current flows through the 33 kohm resistor creating the CRT pattern shown in the fourthquadrant of Figure 7.

7001'0(\

~20ro.

ZGEN A

33K

COM

IN914

.7V==t/

V-20V

" "~-=::+-+---t--III ~cr

RANGE- MEDIUM

TEST-33K RESISTOR AND DIODE IN PARALLEL

FIG.7

7

Figure 8 shows a silicon diode shunted by a 10 ohm resistor with the LOW range selected. Duringthe first half of the cycle the junction is forward biased and in parallel with the 10 ohm resistor.The combined currents of the two devices in parallel is very high and causes a near vertical traceon the CRT.

A vertical line represents a short circuit (zero voltage drop) condition, and, since the junctiondoes not have appreciable conduction until a forward voltage of approximately 0.7 Volts isgenerated, the vertical trace is displaced to the left by this amount. This is shown as the straightvertical portion of the trace in the second quadrant of Figure 8.

In the reverse direction the diode is essentially out of the circuit and all of the current flowsthrough the resistor. This causes the trace in the fourth quadrant and part of the second quadrantof Figure 8.

170mQPEAl< ~!\

--U70mQ

ZIIlEN

10.1\.

COM

IN9/4

RANGE- LOWTEST-IO,/\, RESISTOR AND DIODE IN PARALLEL

FIG.8

TESTING REACTIVE COMPONENTS

Figure 9 shows the trace from a 1uF capacitor in the MEDIUM range. The reactance of thecapacitor is approximately 2 kohm at 80 Hz. This is appreciably less than the generator impedanceof 27 kohm and causes a relatively high current flow with a fairly low voltage drop. Also, sincethe generator is resistive and the test component is reactive, the current (vertical) is 90 degreesout of phase with the voltage (horizontal). The above signal amplitudes when combined with thisphase shift result in the display of a narrow vertical ellipse on the CRT.

ZeEN

'47-

RANGE- MEDIUMTEST- luF CAPACITOR

A

luF

COM

FIG.9

8

When the vertical and horizontal signal amplitudes are equal and the current-voltage phase shiftis 90 degrees, the result is a circular trace. In MEDIUM range this occurs when a 0.13uF capacitoris placed across the input terminals as shown in Figure 10.

ZGEN

RANGE- MEDIUMTEST- .13uF CAPACITOR FIG 10

Figure 11 shows the CRT pattern that results from shunting a 0.13uF capacitor with a 20 kohmresistor in the MEDIUM range. The resistor across the capacitor alters the current-voltage phaseangle in such a way that the circle narrows to an ellipse and there is a counterclockwise rotationof the ellipse from the vertical axis.

ZGEN

I~,EI " \ I

"'

A

COM

.13uF +I~L-- J~ COUNTERCLOCKWISE

ROTATION

RANGE: MEDIUM

TEST: .13uF CAPACITOR AND 20K RESISTOR IN PARALLEL

FIG.II

9

CIRCUIT DESCRIPTION

SIGNAL SECTION:

Figure 12 is a basic circuit representation of the signal section of the TRACKER® . The circuitis shown with a test diode in place.

6.8 TI {\VERT

RIR8

PR I SEC --V

HORIZ

TESTDIODE

--

FIG,12

During the half cycle portion when the horizontal side of the secondary is negative, the test diodeis reverse biased so that very little current flows through the transformer secondary and resistorR8. The vertical end of the secondary is very close to ground potential because of R8, and a verysmall voltage appears on the vertical lead. •

Since the impedance across the horizontal side of the secondary is very high relative to thatappearing on the vertical side, most of the secondary voltage will appear on the horizontal side.

During the next half cycle the horizontal side will go positive and the test diode will clamp atapproximately .7 Volt. Also current will flow through R8 creating a large voltage at the verticalside of the secondary. The voltage that appears across R8 is a direct representation of the currentthat flows through the test diode.

10

Figure 13 is a more detailed circuit description with the HIGH range selected. R4 provides fora phase angle correction when the test points are shorted and compensates for CRT distortion.

+IeoV

VEIIT 84IN

HOltZ~1T10ll

VEIITPOSITION

QZ

R311I0K

TO THE lASEOf' 01

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R34R2I 3KI.U 01

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-IV

RZ4IK

R231101(

FIG.13

RI

80Hzosc

NOTES: Q 3 ~ Q 6 ARE PN2222, ALL OTHERS MPS A42e TH. THERMISTOR

R16 is the horizontal phase correction and compensates for the impedance of R21 going intothe horizontal amplifier as well as CRT distortion. Referring back to Figure 12, it was shown thatmaximum voltage appears at the horizontal end of the secondary only when there is infiniteimpedance presented by R21 and IC1. R16 corrects for this difference.

Referring to Figure 13, R15 and R22 are the vertical and horizontal gain adjustments respectively.Transistors 01,02,03, and associated components form the vertical amplifier, while 04, 05,06, and associated components form the horizontal amplifier. These amplifiers are temperaturecompensated to avoid drifting.

A positive or negative going signal at point CD will be amplified, phase corrected, and placedon the vertical deflection plate of the CRT. A positive or negative signal at point 0 will beamplified, phase corrected, and placed on the horizontal deflection plate.

Vertical and horizontal positions are controlled by a variable DC voltage on the bases of transistors02 and 05 respectively.

Signal transformer TR1 is designed to close tolerances so as to provide the proper secondaryvoltage and impedance levels.

11

The changes in trace positions are accomplished by varying the base voltages of transistorsQ2 and Q5 in the differential amplifiers.

Switch SW6 selects the display of either Input A or Input B or alternating between display A and B.

12

(4) 6.3 Volt Filament Voltage.The power transformer supplies this voltage to the filament of the CRT.

Switch SR5 sets up power transformer TR2 for 220 Volt or 240 Volt environments in the EuropeanEconomic Community.

CATHODE RAY TUBE CIRCUIT:

The CRT is a 7 cm diagonal, green phosphor, electrostatic type.

The high voltage is adjusted to -1350 Volts for normal operation.

INTENSITY ADJUST:

FOCUS ADJUST:

ASTIGMATISM:

R40 is the CATHODE VOLTAGE CONTROL and controls CRT intensityvia a front panel knob (BRIGHT). The cathode voltage can be adjustedfrom -1235 Volts to -1336 Volts.

R39 is the FOCUS CONTROL and has a voltage range of -1033 Voltsto -1235 Volts.

R37 adjusts for astigmatism and has a voltage range of -22 Volts to+ 180 Volts.

FRONT PANEL CONTROLS:

Refer to Figure 18 for schematic.R1 and R2 control the vertical and horizontal CRT trace positions respectively.

OSCILLATOR:

Refer to Figure 16 for schematic. The oscillator is a 2% inch by 4 inch PCB module which plugsinto a socket on the main PCB. It provides an 80 Hz sine wave test signal which has an outputamplitude that is factory adjusted to 10 volts peak-to-peak. For adjustment details, see the sectionon Internal Set-Up and Adjustments.

POWER SUPPLY

Refer to Figure 14 for schematic, and Figure 15 for component layout.

The power supply section provides various operating voltages:

(1) -1350 Volt Regulated High Voltage.03, 04, C9, C10, C11, C12, R46, R47, R48, and R49 form a voltage doubler; Q7 and IC2 provide linear voltage regulation. For adjustment details see Internal Set-Up and AdjustmentsSection.

(2) + 180 Volt Unregulated Deflection Voltage.Diodes 05,06,07, and 08 form a full wave bridge rectifier, and C14 is the filter capacitor.Bleeder resistor R57 discharges voltage in C14 to a safe level within 60 seconds after poweris turned off.

(3) + 6/-6 Volt Regulated Voltage.Diode 09, 010, 011, and 012 form a bridge rectifier; IC3 and IC4 provide regulation for+ 6 Volt and -6 Volt respectively.

R 9 42.ZK 10/.

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MAST.HORIZGAIN

MODEL

TRANSfORMER IDENTIF,CATION

CHART

FIG 14

R 251,6K

f- I-:.!~_~,,0c:.f_"6"_OH"_Z'_+--'O'-'6'----"6""0''-''_i

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rra£~T-..E_R_S_W_'T_C.H ~

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f 3 .!-4 AMP

sw,HI

sw 2WO

RANGE SWITCHES

sw ILO

R 10 68! k /%

RI 1 l,96MEG 1%

~t::l I- ~I R 12 VERTICAL

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-6V_+6 V4--

NOTES, L ALL RESISTORS 1/4 WATT ~... UNLESS OTHERWISESPECIFIED.

2 QI.Q2.Q4.Q~ ARE MPS A42

3. 6 INDICATES VOLTAGE READINGS

4 • CRT SOCKET PIN NUMBER

~ • TERMINAL POINT ON PC B.

OSCILLATORSEE SCHEMATIC

HTR 227SC

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David

Typewritten Text

Schematic

CONNECTOR PLI CONNECTOR PL 2

v-

CONNECTOR PL 3

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., '" (--~,1 Q}] (0"1 '-R3 R4 I__ I

FIG.15

David

Typewritten Text

Parts Location

TOP VIEW

~ ~WrJ WBCE BC E

CONNECTOR1112 13 14 111 PL II , I I

+ 6V

R62.2K

R7R5 D3 D4 680

120R8120

OUTPUT

&:. PI N 3

Q4RI3TIP 29120

RI4 D5 06

RI7RI5 120680500 RI6

-2.2K

C6.022 uf

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DIIC I

R2

PINI +6V2 -6V3 OSC. OUTPUT4 N.C5 GND.

BOTTOM VIEWI C I. I C 2

FIG.16OUTPUT

CAPACITORSAA

DIODES IN914RESISTORS 1/4 WATT

UNTIL THE

NOTES,

ALLALLALL

ADJUST R 15

/S 10V P-P

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FIG. 17

15

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Oscillator Schematic

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Typewritten Text

Oscillator Parts Location

O .... LT[~N""T[

, ,

..

.,""

C"'.....-:L .... IIIKJI(:TOIt

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NOTES UNLESS OTHERWI$£ SPECIFIEDI. ALL RESISTORS ARE 114 W ,,,,2 RY I GORDOS RELAY 835-C

FIG.18

A6

AI

A2

A3

A4

A5MPVERT

+02 C I

EJ 0 ~__B_~ 04n +

IC I []I] C20 003 WlO• C3

3 2

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[ill4

FIG. 19

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16

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Alternate Mode Schematic

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Alternate Mode Parts Location

David

Typewritten Text

Adjustment Location

INTERNAL SET·UP AND ADJUSTMENTS

Refer to Figure 14 and Figure 20.

(A) POWER SUPPLY SECTION:

The High Voltage is factory adjusted to -1350 Volts, and TRACKER® users are advisednot to re-adjust trim pot R51 unless it is absolutely necessary. The adjustment requiresa digital voltmeter and a high voltage probe.

WARNING: HAZARDOUS HIGH VOLTAGE.

STEp·BY·STEP ADJUSTMENTS:

(1) B-1 ES models only set SW5. Factory set for 240V operation. Refer to Figure 20.

(2) Connect probe common to ground point of main PCB.

(3) Connect High Voltage Probe to Test Pin.

(4) Turn power on.

(5) Turn R51 until voltmeter reads -1350 Volts.

(B) OSCILLATOR SECTION:

Refer to Figure 16 and Figure 17. Trackers are factory adjusted to 80 Hz.


(1) Turn power on.

(2) Connect frequency counter to point .& .

(3) Turn trim pot R15 fully clockwise.

(4) Adjust R1 until frequency counter reads 80 Hz.

(5) Adjust R15 until Oscillator output at.& is 10 Volts peak to peak.

(C) SIGNAL SECTION:

Refer to Figure 20 for main PCB Alignment drawing.


(1) Turn all trim pots (R2, R3, R4, R7, R15, R16, R19, and R22) to their fUlly counter-clockwise position.

(2) Turn Horizontal and Vertical controls to the center of their range.

(3) Turn front panel BRIGHT control fully counterclockwise.

(4) Turn power on.

(5) Set front panel switch to the HIGH range position.

(6) Adjust intensity until a spot appears on the CRT.

(7) Adjust Master Vertical Gain (R15) for vertical deflection of approximately % inch.

(8) Adjust Focus (R39), and Astigmatism (R37) for sharpest trace. Check intensity forcorrect brightness.

(9) Adjust Master Horizontal Tilt (R16) to the center of its range.

(10) Adjust Master Horizontal Gain (R22) until trace fills out graticule.

17

(11) Short Test Terminals.

(12) Adjust Master Vertical Gain (R15) until vertical trace is 1-3/8 inch long.

(13) Adjust HIGH Vertical Tilt (R4) until there is no vertical tilt.

(14) Re-adjust Master Vertical Gain (R15) if necessary.

(15) Remove Test Terminal short.

(16) Adjust Master Horizontal Tilt (R16) until the horizontal trace has no tilt.

(17) Switch to MEDIUM range position.

(18) Short Test Terminals.

(19) Adjust MEDIUM range Vertical Tilt (R3) until the trace has no vertical tilt.

(20) Remove Test Terminal short.

(21) Adjust MEDIUM Horizontal Tilt (R7) until the trace has no tilt.

(22) Switch back and forth between HIGH and MED range, and observe the trace. It shouldhave no horizontal tilt on either range, and the ends of the trace should be very closeto the graticule, but not out of view. Both traces should be within 5% of eachother in length.

(23) Short Test Terminals, and switch back and forth between HIGH and MED ranges.Both vertical traces should be within 5% of each other in length.

(24) Install a diode across the Test Terminals. You should see a trace as displayed inFigure 21a.

(25) Final adjustments can be made on Horizontal and Vertical Gain, and Horizontal andVertical Tilt for correct trace. The trace length difference should be less than 5%.The vertical and horizontal traces should have no tilt. Edge of trace should not gooff screen.

(26) Switch to the LOW range.

(27) Short Test Terminals and adjust LOW range Vertical Tilt (R2).

(28) Remove short from Test Terminals, and adjust LOW range Horizontal Gain (R19) sothat trace looks Iike Figure 21 b.

(29) Insert Diode at Test Terminals.

(30) Trace should look like Figure 21c.

(31) Final focus and astigmatism adjustment can be made with diode in test terminals,and the range switch in HIGH or MEDIUM position.

TEST TERMINALS. WITH DIODE TEST TERMINALS. OPEN

RANGE, HIGH OR MEDIUM RANGE', LOW

(a> (b)

FIG.21

18

TEST TERMINALS. WITH DIODE

RANGE. LOW

(e)

TROUBLESHOOTING

GENERAL INFORMATION

A defective TRACKER® should always receive a very careful visual inspection prior to anyexpensive symptomatic troubleshooting.

Burned components, fuses or darkened areas on the printed circuit boards indicate that excessiveheat has been generated, and this is usually a pretty good clue that a component in the affectedarea is defective.

If a visual inspection on both sides of the printed circuit board fails to indicate an obvious problem,then proceed by power on testing for the following voltages. Refer to Figure 14 for the mainTRACKER® schematic.

(A) Check power transformer secondary winding AC Voltages.

WI NDI NG N3 VOLTAG ES (Vrms) 6.1N4 11.1N5 11.1N6 138N7 570

The above readings correspond to nominal AC Input.

(B) Check DC Voltages

(1) -1350 V Acceleration Voltage(2) ± 6V Signal Voltage(3) + 180 V Deflection Voltage

Anyone of the above voltages listed in (A) and (B) should be within ± 5% tolerance. The sourceof a defective voltage should be located and corrected.

If the voltages as outlined above are all correct, then proceed with a complete check of theremaining voltages as shown on the main schematic and oscillator schematic.

A final check can be made with an oscilloscope to check the waveforms as shown by the triangularnumbers on the main schematic. Figure 22 and Figure 23 list various waveforms appearing onthe main PCB.

After a circuit correction has been made, refer to the section on INTERNAL SET-UP AND ADJUSTMENTS for proper CRT trace presentation.

The following symptomatic analysis will help isolate defective circuitry and locate specificdefective components.

POWER SUPPLY

SYMPTOM: DEAD UNIT: Front panel power indicator light not on when front panelpower switch pushed in and power applied. No CRT trace.

CONDITIONS: Test terminals open or shorted. All ranges.

PROBABLE CAUSES: (a) Fuses F1 and F2 open.(b) Power transformer TR2 defective.(c) Power switch SW4 defective.(d) Rectifiers D9, D10, D11 or D12 defective.(e) Capacitors C15, C16, C17, C18, C19 or C20 shorted.(f) Regulators IC3, IC4 defective.

19

TESTPOINTS

FIG22

LOW

WAVEFORM AT VARIOUS TEST POINTS ON MAI~~ PC SOARDTIME BASE: 5MS/DIV

RANGES

MEDIUM HIGH

IV/DIV

5V1DIV

5V/DIV

IV/DIV

5V/DIV

2V IV

IOV/DIV

5V/DIV

5V/DIV

lOVIDIV

20

2V/DIV

20V/DIV

20V/DIV

20V/DIV

IOV/DIV

FIG.23WA.VEFORM A.T VARIOUS TEST POINTS ONMAIN PC80"RDTIME BASE: 5~S/OIV

TESTPOINTS

LOW

20V/DIV

.IV/DIV

.2V/ DIV

20VlDIV

50V/ DIV

RANGES

MEDIUM

20V/DIV

.IV/DIV

.2V / DIV

20V/ DIV

50V/DIV

21

HIGH

20V/DIV

.IV/DIV

.2V/ DIV

20V/OIV f

50V /DIV

SYMPTOM: DEAD UNIT: Front panel power indicator light on. No trace.


PROBABLE CAUSES: (a) No high voltage -1350 volt.(b) Diode 03,04, C9, C10, C11, C12 defective.(c) Transformer secondary winding N7 open.

SYMPTOM: Power indicator light on. Only a "dot" appears on CRT.


PROBABLE CAUSES: (a) No plate deflection voltage.(b) 05, 06, 07, 08 defective.(c) C14 shorted.(d) Transformer secondary winding N6 open.

SYMPTOM: Acceleration voltage reads -1650 Volt, and adjusting trim pot R51 doesnot change voltage.


PROBABLE CAUSES: (a) Bad trim pot R51.(b) Defective IC2.(c) Defective transistor Q7.

SIGNAL SECTION

SYMPTOM: Dot in center of screen. No horizontal and vertical sweep.


PROBABLE CAUSES: (a) No oscillator output (See oscillator section).(b) Signal transformer TR1 defective.(c) ± 6 Volt at Oscillator Module missing.(d) ± 6 Volt plate deflection voltage missing.

SYMPTOM: Dot in center of screen. No horizontal sweep.

CONDITIONS: Test terminal open. HIGH and MED ranges.

PROBABLE CAUSES: (a) IC1 B defective.(b) R22 shorted.

22

SYMPTOM: Trace horizontally off screen. Trace off center of screen.


PROBABLE CAUSES: (a) Resistor R26, R33 changed value.(b) 04, 05, 06, IC1 B defective.(c) Resistor R43, R44 changed value.(d) Capacitors C4, C5 shorted.

SYMPTOM: Trace vertically off screen. Trace vertically off center of screen.


PROBABLE CAUSES: (a) Resistor R23, C29 changed value.(b) 01,02,03, IC1A defective.(c) Resistor R43, R44 changed value.(d) Capacitors C4, C5 shorted.

SYMPTOM: Horizontal tilt trim pot does not change horizontal tilt.

CONDITIONS: Open test terminals on HIGH and MED ranges.

PROBABLE CAUSES: (a) R12, R13, R14, R16, R17, R18 open.(b) Range select switch defective.(c) PCB etching open or shorted to ground.

SYMPTOM: Vertical tilt trim pot does not change vertical tilt.

CONDITIONS: Test terminals shorted.The range that this condition occurs.

PROBABLE CAUSES: (a) Vertical tilt trim pot for the defective range open.(b) Broken wire on signal transformer.

SYMPTOM: Split trace.

CONDITIONS: Open test terminals. All ranges.

PROBABLE CAUSES: Signal transformer defective.

SYMPTOM: Excessive motion at end of trace.


PROBABLE CAUSES: (a) Rectifier D9, D10, D11, D12 defective.(b) Filter capacitor C15, C16, C17, C18, C19, C20 defective.(c) ± 6 Volt regulators defective.(d) Power line noise.(e) Power transformer defective.(f) TRACKER® in close proximity to high level 50 or 60 Hz transformer.(g) Line voltage drop to such a low level that it is out of high voltage

regulation range.

23

SYMPTOM: Intensity control has no effect.


PROBABLE CAUSES: (a) C3 shorted.(b) Intensity control pot R40 open.(c) -1350 Volt very low.

SYMPTOM: No trace.


PROBABLE CAUSES: (a) + 180 Volt plate deflection missing.(b) -1350 acceleration voltage missing.(c) Filament voltage missing.

SYMPTOM: Distorted Ellipse.

CONDITIONS: 0.1 uF across test terminal on HIGH and MED range.100 uF across test terminal on LOW range.

PROBABLE CAUSES: (a) Line voltage low.(b) Distorted Oscillator output.(c) High voltage adjust trim pot R51 setting change.

OSCILLATOR SECTION

Refer to Figure 16 and Figure 17.

SYMPTOM: No oscillator output.


PROBABLE CAUSES: (a) ± 6 Volt missing.(b) Transistor 01, 02, 03, 04 defective.(c) IC3 defective.

24

CRT SECTION

SYMPTOM: Trace out of focus.


PROBABLE CAUSES: (a) R37, R38, R39, R40, R41 open or shorted.(b) C3 shorted.(c) -1350 Volt very low.(d) + 180 Volt very low.(e) CRT socket wires open or shorted.

LIST OF REPLACEMENT PARTS

This section contains a parts breakdown of the HTR 1005B-1S, B-1 ES, B-1JS. Each componentis designated alphanumerically, and can be referenced to assembly drawings or schematics.

HOW TO ORDER PARTS:

Components may be ordered directly from manufacturer by using manufacturer's part number,or from HUNTRON® INSTRUMENTS, INC., or its authorized distributor, by HUNTRON® PARTNUMBER.

For prompt and efficient handling of your order, please supply:1. Model and Serial Number2. Reference Designation3. Part Description4. HUNTRON® Part Number5. Quantity

MAIN PCB ASSEMBLY:

(Refer to Figure 14 and Figure 15)

Unless otherwise specified:All fixed resistors are % W, 5%, carbon filmAll resistor values are in ohms

REF. HUNTRON®DES. DESCRIPTION PART NO.

A1 Main PCB Assembly 117V 07·1031A1 Main PCB Assembly 220V/240V 07·1032A1 Main PCB Assembly 100V 07·1033PCB1 Main PCB 07,7706

C1 Cap, Ceramic 0.001 uF, 100V 03·3030C2 Cap, Ceramic 0.001 uF, 100V 03·3030C3 Cap, Electrolytic 1.uF,450V 03·3040C4 Cap, Ceramic 0.001uF,1400V 03·3023C5 Cap, Ceramic 0.001uF,1400V 03·3023C6 Cap, Ceramic 0.02uF, 1000V 03·3004C7 Cap, Electrolytic 1uF,450V 03·3040C8 Cap, Electrolytic 1uF,450V 03·3040C9 Cap, Electrolytic 1uF,450V 03·3040C10 Cap, Electrolytic 1uF,450V 03·3040C11 Cap, Electrolytic 1uF, 100V 03·3006C12 Cap, Electrolytic 22uF, 250V 03·3043C13 Cap, Electrolytic 1000uF, 16V 03·3024C14 Cap, Electrolytic 1000uF, 16V 03·3024C15 Cap, Tantalum 10uF, 25V 03·3011C16 Cap, Tantalum 10uF, 25V 03·3011C17 Cap, Electrolytic 2200uF, 6.3V 03·3045C18 Cap, Electrolytic 2200uF, 6.3V 03·3045C19 Cap, Ceramic 0.01 uF, 2000V 03·3042

25


01 Diode, Signal IN914 04·400702 Diode, Rectifier HV15F 04·401003 Diode, Rectifier HV15F 04·401004 Diode, Rectifier IN4005 04·401205 Diode, Rectifier IN4005 04·401206 Diode, Rectifier IN4005 04·401207 Diode, Rectifier IN4005 04·401208 Diode, Rectifier IN4001 04·400609 Diode, Rectifier IN4001 04·4006010 Diode, Rectifier IN4001 04·4006011 Diode, Rectifier IN4001 04·4006

F1 Fuse, 250V % Amp AGX 02·2132F2 Fuse, 250V % Amp AGX 02·2132F3 Fuse, 250V % Amp AGX 02·2132

IC1 IC, Dual Op Amp LM1458N 05·5012IC2 IC, Op Amp LM741CN 05·5009IC3 IC, Pos. Reg., + 6V MC7806CT 05·5004IC4 IC, Neg. Reg., -6V MC7906CT 05·5005

J1 Jack 01·1070

L1 Line Cord, 110V/120V 01·1027Line Cord, 220V/240V 01·1049

MP1 Heat Sink 07·7151MP2 Regulator Insulator 07·7084MP3 Bushing Nylon Shoulder 07·7119MP4 (2) Screw, 4/40, 3/8 Inch 07·7086MP5 (2) Nut Hex, 4/40 07·7087MP6 (2) Washer, Lock, Star, #4 07·7089MP7 Test Pin 07·7153MP8 (6) Fuse Clip 02·2044MP9 Threaded Standoff 6·32 1" 07·7156MP10 Screw, 6·32 3/8" 07·7172MP11 Washer, Lock Star #6 07·7171

PL1 Header, 6 Pin 07·7224PL2 Header, Polarized, 12 Pin 07·7158PL3 Header, Polarized, 12 Pin 07·7158

01 Transistor, NPN 300V MPSA42 05·500302 Transistor, NPN 300V MPSA42 05·500303 Transistor, NPN PN2222 05·501304 Transistor, NPN 300V MPSA42 05·500305 Transistor, NPN 300V MPSA42 05·500306 Transistor, NPN PN2222 05·501307 Transistor, NPN 400V TIP 50 05·5016

R1 Resistor 6.8,1W 02·2086R2 Pot, Trimmer 5k 02·2090R3 Pot, Trimmer 5k 02·2090R4 Pot, Trimmer 5k 02·2090R5 Resistor 220, V2W 02·2003R6 Resistor 10, V2W 02·2077R7 Pot, Trimmer 100k 02·2091

26


R8 Res, Metal Film 86.6k,1% 02·2136R9 Res, Metal Film 42.2k,1% 02·2122R10 Res, Metal Film 681k,1% 02·2123R11 Res, Metal Film 1.96M,1% 02·2150R12 Thermistor 5k 02·2110R13 Resistor 68k 02·2103R14 Resistor 22k 02·2157R15 Pot, Trimmer 50k 02·2085R16 Pot, Trimmer 25k 02·2155R17 Resistor 20K 02·2082R18 Resistor 10k 02·2137R19 Pot, Trimmer 500k 02·2058R20 Res, Metal Film 196k, 1% 02·2153R21 Resistor 590k,1% 02·2154R22 Pot, Trimmer 10k 02·2084R23 Resistor 180k 02·2124R24 Resistor 1k 02·2125R25 Resistor 1.6k 02·2135R26 Resistor 180k 02·2124R27 Resistor 1k 02·2125R28 Resistor 1.6k 02·2135R29 Resistor 180k 02·2124R30 Resistor 1k 02·2125R31 Resistor 180k 02·2124R32 Resistor 1k 02·2125R33 Resistor 16k 02·2134R34 Resistor 3k 02·2126R35 Pot, Trimmer, Cermet 1M 02·2070R36 Res, High Voltage 5M, V2W 02~2088

R37 Pot, Trimmer, Cermet 1M 02·2070R38 Pot, Control 500k 02·2095R39 Resistor 68k 02·2103R40 Resistor 4.7M 02·2127R41 Resistor 1M 02·2130R42 Resistor 10M, V2W 02·2102R43 Resistor 10M, V2W 02·2102R44 Resistor 10M, V2W 02·2102R45 Resistor 10M, V2W 02·2102R46 Resistor 5M, 1f2W 02·2088R47 Pot, Trimmer 50k 02·2085R48 Resistor 27K 02·2133R49 Resistor 1k 02·2125R50 Resistor 2.2M 02·2131R51 Resistor 2.2k 02·2079R52 Resistor 10k 02·2137R53 Resistor 200k 02·2140R54 Resistor 2.0M 02·2129

S01 Socket, 5 Pin 07·7149

SW1·SW4 Switch Assembly 07·7067

TB1 Terminal Block 07·7065

TR1 Transformer, Signal 06·6030

Z1 ZNR 130V 02·2038ZNR 250V 02·2061

27

OSCILLATOR PCB ASSEMBLY:


Unless otherwise specified:All fixed resistors are %W, 5%, carbon filmAll resistor values are in ohms


A2 Oscillator PCB Assembly 07·1018

PCB2 Oscillator PCB 07·7730

C1 Cap, Mylar 0.1uF, 250V, 5% 03·3026C2 Cap, Mylar 0.1uF, 250V, 5% 03·3026C3 Cap, Mylar 0.1uF, 250V, 5% 03·3026C4 Cap, Mylar 0.15uF, 250V, 5% 03·3048C5 Cap, Mylar 0.1 uF, 250V, 5% 03·3026C6 Cap, Mylar 0.022uF, 250V, 5% 03·3049

D1 Diode, Signal IN914 04·4007D2 Diode, Signal IN914 04·4007D3 Diode, Signal IN914 04·4007D4 Diode, Signal IN914 04·4007D5 Diode, Signal IN914 04·4007D6 Diode, Signal IN914 04·4007

IC1 IC, 2.5 Volt Ref. LM336BZ·2.5 05·5011IC2 IC, 2.5 Volt Ref. LM336BZ·2.5 05·5011IC3 IC, Dual Op Amp LM1458N 05·5012

PL1 Header, 5 Pin 07·7152

01 Transistor, PNP, 300V MPSA92 05·501502 Transistor, PNP, Power TIP 30 05·500803 Transistor, NPN, 300V MPSA42 05·500304 Transistor, NPN, Power TIP 29 05·5007

R1 Pot, Trimmer 10k 02·2084R2 Resistor 13k 02·2160R3 Resistor 68k 02·2103R4 Resistor 68k 02·2103R5 Resistor 120 02·2146R6 Resistor 2.2k 02·2079R7 Resistor 680 02·2100R8 Resistor 120 02·2146R9 Resistor 470 02·2098R10 Resistor 68 02·2148R11 Resistor 470 02·2098R12 Resistor 68 02·2148R13 Resistor 120 02·2146R14 Resistor 120 02·2146R15 Pot, Trimmer 500 02·2147R16 Resistor 2.2k 02·2079R17 Resistor 680 02·2100R18 Resistor 10k 02·2137R19 Resistor 4.7k 02·2145

28

FRONT PANEL CONTROL PCB ASSEMBLY:


Unless otherwise specified:All fixed resistors are 1f4W, 5%, carbon filmAll resistor values are in ohms


A3 Control PCB Assembly 07·1034

PCB3 Control PCB 07·7707

C1 Cap, Mylar 0.1uF,250V 03·3036C2 Cap, Electrolytic 47uF,6.3V 03·3041C3 Cap, Electrolytic 47uF,6.3V 03·3041

01 Diode, LED, Green XC209G 04·400902 Diode, LED, Red XC209R 04·400003 Diode Signal 1N914 04·400704 Diode, Signal 1N914 04·4007

IC1 IC, Timer NE555 05·5006

MP1 Bushing 01·1059

R1 Pot, Control 1K 02·2149R2 Pot, Control 1k 02·2149R3 Res 15k 02·2151R4 Res 470 02·2098R5 Res 470 02·2098R6 Res 10k 02·2137R7 Res 10M 02·2152R8 Res 470 02·2098R9 Resistor 1.8k 02·2128R10 Resistor 1.8k 02·2128

RY1 Relay, SPOT 835C·3 (Gordos) 07·7901

S01 Socket, 6 Pin 07·7225

29

FRONT PANEL ASSEMBLY:

(Refer to Figure 24)


A3 Control PCB Assembly 07·1034

03 Diode, LED, Green XC209G 04·4009

J1 Banana Jack, Red 01·1030J2 Banana Jack, Black 01·1031J3 Banana Jack, Yellow 01·1032

K1 Knob 01·1060K2 Knob 01·1060K3 Knob 01·1060

MP1 Shaft, 5.9 Inch 07·7154MP2 Coupler 07·7147MP3 Spacer, Control Board 01·1035MP4 Screw, Control Board 01·1036MP5 Graticule 01·2002MP6 Glass Lens 01·1006MP7 Lens Gasket, Vertical 01·1066MP8 Lens Gasket, Horizontal 01·1067

SW6 Switch, Toggle, SPOT (on·oft·on) 07·7071

FIG.2,4

30

CASE ASSEMBLY:

(Refer to Figure 25)

REF.DES.

CRT 1

MP1MP1MP2MP3 (2)MP4 (2)MP5 (2)MP6MP7MP8MP9 (4)MP10 (4)MP11MP12

DESCRIPTION

Cathode Ray Tube

Rear Extension Assembly B·1S, BIJS ModelsRear Extension Assembly B1·ES ModelsCase, Top AssemblyScrew, YokeSpacer, YokeYoke HalfFace PlateHandle AssemblyCase, BoUom AssemblyCase, FeetScrew, CaseShield, CRTShield, Half

HUNTRON®PART NO.

07·7059

01·212701·212801·211701·101701·111601·111401·106801·211901·212901·102001·101907·100007·1011

31

HTR 10058·1 INTERNAL SET·UP AND ADJUSTMENTS(REFER TO PAGE 37)

1. Adjust all Trim Pots (R1, R2, R3, Rl, R9, R16, R19, R20, R30, R32). To their fully counterclockwise position.

2. Adjust front panel vertical and horizontal controls to the center of their range.

3. Turn front panel intensity control fUlly counterclockwise.

4. Turn power on.

5. Put front panel swith on HIGH range position.

6. Adjust intensity until spot appears on screen.

7. Adjust master vertical gain (R19) for vertical deflection of approximately .5 inch.

8. Adjust focus (R32) and astig (R30) for sharpest trace (check intensity for correctbrightness).

9. Adjust master horizontal phase (R16) to the center of its range.

10. Adjust master horizontal gain (R20) until trace fills out screen.

11. Short output terminals.

12. Adjust master vertical gain (R19) until vertical trace is 1 3/8" long.

13. Adjust vertical phase - hi range (R3) until no vertical tilt.

14. Readjust R19.

15. Remove output terminal short.

16. Adjust master horizontal phase (R16) until horizontal trace has no tilt.

17. Switch to MED range position

18. Short output.

19. Adjust MED range vertical phase (R2) until trace has no vertical tilt.

20. Remove short.

21. Adjust MED horizontal phase (Rl) until trace has no tilt.

22. Switch back and forth between HIGH and MED range and observe trace. It should haveno horizontal tilt on either range and ends of trace should be very close to tube mask butnot out of view. Both traces should be within 5% of each other in length.

23. Short output and switch back and forth between HIGH and MED range. Both verticaltraces should be within 5% of each other in length and approximately 1 3/8" in length.

16

24. Install diode at output terminals you should see trace as displayed in figure 11.

VerticalCenter Line

1------1f----.....>-j HorizontalCenter Line

Figure 11

25. Final adjustments can be made on horizontal and vertical gain and horizontal and vertical phase for correct trace. The trace length difference should be less than 5%. Verticaland horizontal trace should have no tilt. Edge of trace should not go off screen.

26. Swith to LOW range.

27. Short output and adjust LOW range vertical phase (R1) for no vertical tilt.

28. Open output and adjust LOW range horizontal gain (R9) so that trace looks like figure 12.

29. Insert diode at output terminals.

30. Trace should look like flgur. 13.

31. Final focus and astig adjustment can be made with diode In test terminals and rangeswitch in HIGH or MED position.

1/8"

f-----if-------j HorizontalCenter Line

Figure 12Trace should not have full horizontal length.

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TRIM POT CONTROL LOCATION MODEL HTR 1005 B-1

MAINTENANCE MANUAL - Diagramasde.com · maintenance manual for models htr 10058·15 htr 10058·1e5...

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Transcript of MAINTENANCE MANUAL - Diagramasde.com · maintenance manual for models htr 10058·15 htr 10058·1e5...